Just take this example here
The home was bought by Asians, especially Chinese origin. Google them with various options, you may have google keyword search. Any Tech or local residents I can get it with first hit either facebook or linkedln etc.
You will never be able to find them in google. Mostly, they are unknown records, some relatives of bay area or non-resident of USA.
Even though this is not 100% correct, but more than 75% accuracy is there. Try with your known pals, you will get better results.